Table 1. The list of potential additive candidates for changing zeta potential activity

Ingredient	Chemical formula	Molecular weight (g/mol)	Purity (%)	Brand	Cat. No.
Amino acids
L-Phenylalanine	C9H11NO2	165.19	99.0	SIGMA	78019
L-Lysine monohydrochloride	C6H14N2O2-HCl	182.65	98.0	SIGMA	L5626
L-Threonine	C4H9NO3	119.12	99.8	SIGMA	89179
L-Tryptophan	C11H12N2O2	204.23	99.0	SIGMA	T8941
L-Tyrosine	C9H11NO3	181.19	99.0	SIGMA	93829
L-Histidine	C6H9N3O2	155.15	99.5	SIGMA	53319
Carbohydrates
Fructooligosaccharide	C72H121O61	-	90.0	SIGMA	F8052
Sucrose	C12H22O11	342.30	99.5	SIGMA	S7903
Glucose	C6H12O6	180.16	99.5	SIGMA	G7021
Trehalose	C12H22O11-2H2O	378.33	99.0	SIGMA	T9531
Vitamins
Thiamine hydrochloride	C12H17CIN4OS-HCl	337.27	99.0	SIGMA	T1270
Riboflavin	C17H20N4O6	376.36	98.0	SIGMA	R9504
L-Ascorbic acid	C6H8O6	176.12	99.5	SIGMA	95209
Osmolytes
Taurine	C2H7NO3S	125.15	99.0	SIGMA	15224